US20220393827A1 - Uplink transmission control method and apparatus, and device thereof - Google Patents

Uplink transmission control method and apparatus, and device thereof Download PDF

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Publication number
US20220393827A1
US20220393827A1 US17/887,514 US202217887514A US2022393827A1 US 20220393827 A1 US20220393827 A1 US 20220393827A1 US 202217887514 A US202217887514 A US 202217887514A US 2022393827 A1 US2022393827 A1 US 2022393827A1
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srs resource
group index
resource set
srs
coreset group
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English (en)
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Wenhong Chen
Zhihua Shi
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. reassignment GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, WENHONG, SHI, ZHIHUA
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H04W72/0406—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the application relates to a field of communication technology, and particularly, to the technology field of uplink transmission.
  • TRPs transmission reception points
  • different TRPs can independently schedule the transmission of a physical uplink shared channel (PUSCH) of a same user equipment.
  • PUSCH physical uplink shared channel
  • the transmission of different PUSCHs can be configured with independent transmission parameters, such as beams, precoding matrices, and layers.
  • the scheduled PUSCH transmission may be transmitted in the same time slot or in different time slots. If the user equipment is scheduled to transmit two PUSCHs simultaneously in the same time slot, it needs to determine how to perform the transmission according to the capabilities of the user equipment itself.
  • the two PUSCHs can be transmitted at the same time, and the PUSCHs transmitted on different panels are aligned with the corresponding TRPs for analog forming, so that different PUSCHs can be distinguished through the spatial domain, thereby providing uplink spectral efficiency. Meanwhile, the transmission on multiple panels can also be applied to the PUCCH. If the user equipment has only a single panel or does not support simultaneous transmission of multiple panels, the PUSCH can only be transmitted on one panel.
  • each panel includes a set of physical antennas, and each panel has an independent radio frequency channel.
  • the channel conditions corresponding to different panels are different, and different transmission parameters are required according to the respective channel information.
  • the configuration of different SRS resources is required for different panels to obtain uplink channel information.
  • the conventional technology fails to configure an independent sounding reference signal (SRS) for different TRPs or panels to obtain uplink channel information, and meanwhile, the user equipment also fails to map PUSCH/PUCCH of different TRPs or panels to different SRSs and thereby fails to perform independent dispatching on each TRP or panel.
  • the terminal fails to perform independent power control on each TRP or each SRS. Therefore, the flexibility of uplink transmission is greatly limited.
  • the application provides an uplink transmission control method, an apparatus, and a device thereof with flexibility.
  • An uplink transmission control method applied to user equipment, includes determining a control resource set (CORESET) group index corresponding to a first sounding reference signal (SRS) resource or a first SRS resource set; determining transmission parameters of an uplink signal which corresponds to a same CORESET group index as the first SRS resource or the first SRS resource set according to the first SRS resource or the first SRS resource set, or determining power control parameters of the first SRS resource or the first SRS resource set according to the CORESET group index.
  • CORESET control resource set
  • SRS sounding reference signal
  • An uplink transmission control method applied to a network device, includes determining a control resource set (CORESET) group index corresponding to a first sounding reference signal (SRS) resource or a first SRS resource set; indicating the control resource set CORESET group index corresponding to the first SRS resource or the first SRS resource set to user equipment.
  • CORESET control resource set
  • SRS sounding reference signal
  • An uplink transmission control apparatus applied to user equipment, includes an index determining module determining a control resource set (CORESET) group index corresponding to a first sounding reference signal (SRS) resource or a first sounding reference signal (SRS) resource set; a parameter determining module determining transmission parameters of a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) of a same CORESET group index corresponding to the first SRS resource or the first SRS resource set according to the first SRS resource or the first SRS resource set, or determining power control parameters of the first SRS resource or the first SRS resource set according to the CORESET group index.
  • CORESET control resource set
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • An uplink transmission control apparatus applied to a network device, includes a determining module and an indicating module.
  • the determining module is configured to determine a control resource set (CORESET) group index corresponding to a first sounding reference signal (SRS) resource or a first sounding reference signal SRS resource set.
  • the indicating module is configured to indicate the control resource set (CORESET) group index corresponding to the first SRS resource or the first SRS resource set to user equipment.
  • User equipment includes a processor, a memory, and a network interface.
  • the processor calls a program in the memory, executes any uplink transmission control method in the application, and sends an execution result through the network interface.
  • a network device includes a processor, a memory, and a network interface.
  • the processor calls a program in the memory, executes any uplink transmission control method in the application, and sends an execution result through the network interface.
  • a chip includes a processor for calling and running a computer program from a memory, and a device equipped with the chip executes any uplink transmission control method in the application.
  • a computer-readable storage medium includes a program for an uplink transmission method stored on the computer-readable storage medium.
  • the program for the uplink transmission method is executed by a processor, any uplink transmission control method in the application is implemented.
  • a computer program product is stored in a non-transitory computer-readable storage medium.
  • any uplink transmission control method in the application is implemented.
  • the beneficial effects of the application are as follows.
  • the user equipment determines the CORESET group index corresponding to the SRS resource or the SRS resource set, and determines the transmission parameters of the PUSCH or PUCCH corresponding to the same CORESET group index according to the SRS resource or the SRS resource set, or determines the power control parameters of the SRS or the SRS resource set according to the CORESET group index. Therefore, the network device can configure different CORESET group indexes for the uplink signals of different TRPs or different panels, and thereby the SRS of one TRP or panel can be used to determine the transmission parameters of the PUSCH/PUCCH of the TRP or panel, and the PUSCH/PUCCH of each TRP or panel can be independently scheduled.
  • the user equipment determines the power control parameters of the SRS according to the CORESET group index, so as to perform independent power control on the SRS of each TRP or each panel.
  • the flexibility of uplink transmission control is improved.
  • FIG. 1 is a view illustrating a system architecture according to an embodiment of the application.
  • FIG. 2 is an interaction diagram illustrating an uplink transmission control method provided by Embodiment 1 of the application.
  • FIG. 3 is a schematic view illustrating the scheduling of PUSCH and SRS resource sets through DCI in the same CORESET.
  • FIG. 4 is a schematic view illustrating SRS resource sets using different CORESET group indexes and closed-loop power control adjustment states.
  • FIG. 5 is a block diagram illustrating an apparatus of uplink transmission control according to Embodiment 2 of the application.
  • FIG. 6 is a block diagram illustrating an apparatus of uplink transmission control according to Embodiment 3 of the application.
  • FIG. 7 is a schematic view illustrating the structure of an uplink transmission control apparatus according to Embodiment 4 of the application.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” herein is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships. For example, A and/or B can represent three possible scenarios in which A exists alone, both A and B exist, and B exists alone.
  • the mark “/” in the specification generally indicates an “or” relationship between the related objects before and after the mark.
  • B corresponding to A presents that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is determined only according to A, and B may also be determined according to A and/or other information.
  • FIG. 1 illustrates a wireless communication system 100 applied in the embodiment of the application.
  • the wireless communication system 100 includes a network device 110 and at least one user equipment 120 located within the coverage of the network device 110 .
  • the network device 110 communicates with the user equipment 120 .
  • the wireless communication system 100 may include multiple network devices, and the coverage of each network device may include other user equipment, which is not limited in the embodiment of the application.
  • the network device 110 may provide communication coverage for a specific geographic area and may communicate with user equipment (e.g., UE) located in the coverage area.
  • the network device 100 may be a base transceiver station (BTS) in a GSM system or a CDMA system, may also be a NodeB (NB) in a WCDMA system, may also be an evolutional Node B (eNB or eNodeB) in an LTE system, or a wireless controller in the cloud radio access network (CRAN).
  • BTS base transceiver station
  • NB NodeB
  • eNB evolutional Node B
  • CRAN cloud radio access network
  • the network device may be a relay station, an access point, a vehicle-mounted apparatus, a wearable apparatus, a network-side apparatus in a 5G network, or a network device in a future evolved public land mobile network (PLMN), and the like.
  • PLMN public land mobile network
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE-A advanced long term evolution
  • NR new radio
  • evolution system of NR system LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems, other communication systems, and the like.
  • UMTS universal mobile telecommunication system
  • WLAN wireless local area networks
  • WiFi wireless fidelity
  • next-generation communication systems other communication systems, and the like.
  • the user equipment 120 may be mobile or stationary.
  • the user equipment 120 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile platform, a remote station, a remote terminal, a mobile apparatus, user equipment, a terminal, a wireless communication apparatus, a user agent, or a user apparatus.
  • UE user equipment
  • the access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld apparatus with the function of wireless communication, a computing apparatus, other processing apparatuses connected to wireless modems, a vehicle-mounted apparatus, a wearable apparatus, user equipment in 5G networks or user equipment in future evolved PLMNs, and the like.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • mobile communication systems may not only support conventional communication, but also support communication, such as apparatus to apparatus (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, and the like.
  • D2D apparatus to apparatus
  • M2M machine to machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system in the embodiments of the application may be applied to a carrier aggregation (CA) scenario, may also be applied to a dual connectivity (DC) scenario, and may also be applied to a standalone (SA) meshing scenario.
  • CA carrier aggregation
  • DC dual connectivity
  • SA standalone
  • the embodiments of the application do not limit the applied spectrum.
  • the embodiments of the application may be applied to licensed spectrum and may also be applied to unlicensed spectrum.
  • FIG. 2 illustrates an uplink transmission control method provided by Embodiment 1 of the application and the method includes steps as follows.
  • a network device determines a control resource set (CORESET) group index corresponding to a first sounding reference signal (SRS) resource or the first sounding reference signal (SRS) resource set.
  • CORESET control resource set
  • the network device indicates the control resource set (CORESET) group index corresponding to the first SRS resource or the first SRS resource set to the user equipment.
  • CORESET control resource set
  • the user equipment determines the control resource set (CORESET) group index corresponding to the first SRS resource or the first sounding reference signal (SRS) resource set; that is, the user equipment determines the control resource set (CORESET) group index corresponding to the first SRS resource or the SRS resource set according to the indication of the network device.
  • CORESET control resource set
  • SRS sounding reference signal
  • the user equipment determines transmission parameters or power control parameters. Specifically, the user equipment determines the transmission parameters of an uplink signal which corresponds to the same CORESET group index as the first SRS resource or the first SRS resource set according to the first SRS resource or the first SRS resource set, or the power control parameters of the first SRS resource or the first SRS resource set is determined according to the CORESET group index.
  • the uplink signal includes physical uplink shared channels (PUSCHs) and/or physical uplink control channels (PUCCHs).
  • PUSCHs physical uplink shared channels
  • PUCCHs physical uplink control channels
  • the step of determining the control resource set (CORESET) group index corresponding to the first sounding reference signal SRS resource or the first sounding reference signal (SRS) resource set includes any one of the determining manners as follows.
  • the CORESET group index is determined according to a configuration parameter of the first SRS resource or the first SRS resource set, and the configuration parameter includes an indication parameter for indicating the CORESET group index corresponding to the first SRS resource or the first SRS resource set; optionally, a high-layer parameter for configuring the first SRS resource set may include a parameter indicating the CORESET group index.
  • the advantage of Manner 1 is that the existing signaling mechanism can be reused as much as possible.
  • the parameters of the first SRS resource set may include:
  • the CORESETPoolIndex is used to indicate the CORESET group index. A value of 0 is taken when not configured, and a value of 1 is taken when configured. Therefore, if the network device does not include a parameter indicating the CORESET group index from the parameters for configuring the first SRS resource or the first SRS resource set, the user equipment may set the CORESET group index to 0.
  • the CORESET group index is determined according to the medium access layer control element (MAC CE) for activating semi-persistent SRS transmission; and the MAC CE includes a parameter for indicating the CORESET group index. Specifically, the MAC CE for activating semi-persistent SRS transmission may also indicate the CORESET group index as well.
  • the network device does not include a parameter for indicating the CORESET group index in the MAC CE for activating semi-persistent SRS transmission, the user equipment may set the CORESET group index to 0. Based on Manner 2, the corresponding CORESET group index can be configured while the first SRS resource set is activated, which is highly flexible.
  • the CORESET group index of the CORESET where the DCI for activating the aperiodic SRS transmission is located is used as the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the network device may configure the CORRSET group index of each CORESET in advance through high-layer signaling.
  • the user equipment may set the CORESET group index to 0.
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to spatial relation information or a transmission configuration indicator (TCI) state of a second SRS resource in the first SRS resource or the first SRS resource set.
  • TCI transmission configuration indicator
  • the second SRS resource is the SRS resource earliest transmitted in the first SRS resource set; the second SRS resource is the SRS resource with the lowest SRS resource identification (ID) in the first SRS resource set; or the second SRS resource is any SRS resource in the first SRS resource set.
  • ID SRS resource identification
  • the CORESET group index corresponding to the first SRS resource is determined according to the spatial relation information or the TCI state of the first SRS resource.
  • the spatial relation information or the TCI state is used to determine the transmission beam used on the first SRS resource, and the transmission beams used by different transmission points (TRPs) or panels are different, so the CORESET group index and the transmission beams can be indicated correlatedly.
  • the user equipment can determine the CORESET group index according to the indication information of the transmission beams, thereby reducing the signaling overhead of indicating the CORESET group index. For example, if the transmission beams configured by two SRS resources are the same, that is, their spatial relation information or TCI states are the same, then their corresponding CORESET group indexes are the same as well.
  • the CORESET group index corresponding to the first SRS resource set is determined according to the spatial relation information or the TCI state of the second SRS resource in the first SRS resource set. Specifically, one of the following implementations may be included.
  • the second SRS resource is the SRS resource earliest transmitted in the first SRS resource set, or the SRS resource with the lowest SRS resource identification (ID) in the first SRS resource set, or any SRS resource in the first SRS resource set.
  • ID SRS resource identification
  • the spatial relation information or TCI states of different SRS resources in the first SRS resource set correspond to the same CORESET group index.
  • different SRS resources in the first SRS resource set may use different spatial relation information or different TCI states, but the spatial relation information or TCI states correspond to the same CORESET group index.
  • the same CORESET group index is configured in the spatial relation information or TCI states.
  • the CORESET group indexes determined by the user equipment according to the spatial relation information or TCI states of different SRS resources in the first SRS resource set are the same.
  • the second SRS resource may be any SRS resource in the first SRS resource set.
  • the user equipment may determine the CORESET group index corresponding to the first SRS resource or the first SRS resource set in the following two ways.
  • the configuration parameter of the spatial relation information or the TCI state includes the CORESET group index.
  • the configuration parameter may be used to configure RRC signaling of each spatial relation information or TCI state or may be used to activate MAC signaling of the spatial relation information or the TCI state.
  • a correspondence relationship exists between the spatial relation information and the CORESET group index or between the TCI state and the CORESET group index; the correspondence relationship can be pre-configured.
  • the user equipment determines the CORESET group index according to the correspondence relationship and the spatial relation information or the TCI state. Specifically, the user equipment may be notified of the correspondence relationship in advance through RRC signaling.
  • the network device may notify the user equipment of the correspondence relationship between the spatial relation informationID and the CORESETPoolIndex, or the correspondence relationship between the TCI-StateID and the CORESETPoolIndex is notified.
  • the user equipment may set the CORESET group index to 0.
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to the closed-loop power control adjustment state used by the first SRS resource or the first SRS resource set.
  • the CORESET group index of the CORESET where the DCI scheduling the PUSCH is located is scheduled to be used as the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the user equipment uses the CORESET group index of the CORESET where the first DCI is located to serve as the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the first DCI is used to schedule the PUSCH that uses the closed-loop power control adjustment state of the latest transmission, or the first DCI may also be a DCI used to schedule other PUSCHs using the closed-loop power control adjustment state.
  • the SRS closed-loop power control adjustment state transmitted on the first SRS resource or the first SRS resource set is different from the closed-loop power control adjustment state of the PUSCH, then different CORESET group indexes corresponding to the first SRS resources or the first SRS resource sets using different closed-loop power control adjustment state indexes are used.
  • the corresponding CORESET group index is determined according to an SRS resource ID of the first SRS resource or an SRS resource set ID of the first SRS resource set.
  • the user equipment and the network device may agree on the SRS resource ID or the correspondence relationship between the SRS resource set ID and the CORESET group index. For example, an even ID value corresponds to CORESET group index 0, and an odd ID value corresponds to CORESET group index 1.
  • the network device may configure the SRS resource ID or the correspondence relationship between the SRS resource set ID and the CORESET group index through high-layer signaling, and thereby the user equipment can determine the corresponding CORESET group index according to the SRS resource ID or the SRS resource set ID.
  • the manner further includes step S 230 A.
  • step S 230 A if the user equipment cannot derive the CORESET group index corresponding to the first SRS resource or the first SRS resource set from the configuration information of the network device, then the value of the CORESET group index is set as a preset value.
  • the preset value may be 0.
  • the user equipment sets the value of the CORESET group index to be 0.
  • multiple first SRS resource sets for obtaining downlink CSI or multiple first SRS resource sets for antenna switching correspond to the same CORESET group index.
  • the network device needs to configure multiple same CORESET group indexes for the multiple SRS resource sets or a CORESET group index for the multiple SRS resource sets.
  • the network device indicates the first SRS resource or the control resource set (CORESET) group index corresponding to the first SRS resource set to the user equipment and includes steps as follows.
  • the CORESET group index is indicated by a configuration parameter of the first SRS resource or the first SRS resource set.
  • the configuration parameter includes an indicating parameter for indicating the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the medium access layer control element (MAC CE) for activating semi-persistent SRS transmission indicates the CORESET group index
  • the MAC CE includes a parameter for indicating the CORESET group index
  • t the CORESET group index corresponding to the first SRS resource or the first SRS resource set is indicated according to spatial relation information or a transmission configuration indicator (TCI) state of a second SRS resource in the first SRS resource or the first SRS resource set.
  • TCI transmission configuration indicator
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is indicated via the closed-loop power control adjustment state used by the first SRS resource or the first SRS resource set.
  • the corresponding CORESET group index is indicated via the SRS resource ID of the first SRS resource or the SRS resource set ID of the first SRS resource set.
  • the step S 240 of determining the transmission parameters of an uplink signal which corresponds to the same CORESET group index as the first SRS resource or the first SRS resource set according to the first SRS resource or the first SRS resource set includes steps as follows.
  • the transmission parameters of the PUSCH are determined according to the first SRS resource or a third SRS resource; the third SRS resource is an SRS resource determined from the first SRS resource set according to the sounding reference signal resource indication (SRI) information or the transmission configuration indication (TCI) information in the DCI scheduling the PUSCH.
  • the uplink signal parameters include PUSCH.
  • the step S 241 of determining the transmission parameters of the PUSCH according to the first SRS resource or the third SRS resource includes at least one of the following steps.
  • a precoding matrix for transmitting the PUSCH is determined based on the number of antenna ports of the first SRS resource or the third SRS resource and the precoding matrix indication (PMI) information notified by the network device.
  • This method can be used for codebook-based PUSCH transmission. For example, the user equipment determines the codebook for the PUSCH transmission according to the number of antenna ports of the first SRS resource or the third SRS resource, and then the target codeword is determined from the codebook to serve as the precoding matrix of the PUSCH according to the PMI included in the DCI scheduling the PUSCH.
  • a precoding matrix for transmitting the SRS on the first SRS resource or the third SRS resource is used as the precoding matrix for transmitting the PUSCH. This method can be used for non-codebook-based PUSCH transmission.
  • the transmission beam for transmitting the SRS on the first SRS resource or the third SRS resource is used as the transmission beam for transmitting the PUSCH.
  • the total number of antenna ports of the first SRS resource or the third SRS resource, or the number of SRS resources included in the first SRS resource or the third SRS resource is used as the number of antenna ports for transmitting the PUSCH.
  • This method can be used for non-codebook based PUSCH transmission.
  • the antenna ports for transmitting the first SRS resource or the third SRS resource are used as the antenna ports for transmitting the PUSCH.
  • An antenna panel for sending the SRS on the first SRS resource or the third SRS resource is used as an antenna panel for transmitting the PUSCH.
  • the step S 240 of determining the transmission parameters of an uplink signal which corresponds to the same CORESET group index as the first SRS resource or the first SRS resource set according to the first SRS resource or the first SRS resource set includes steps as follows.
  • the SRS resource in the first SRS resource or the first SRS resource set is used as a reference source signal in the spatial relation information of the PUSCH or the reference source signal in the TCI state of the PUSCH, and the transmission beam of the PUSCH is determined according to the reference source signal.
  • the SRS resource in the first SRS resource or the first SRS resource set is used as a reference source signal in the spatial relation information of the PUCCH or the reference source signal in the TCI state of the PUCCH, and the transmission beam of the PUCCH is determined according to the reference source signal.
  • the SRS resource in the first SRS resource set may be any SRS resource in the first SRS resource set.
  • the network device may configure the SRS resource in the first SRS resource set to the user equipment to serve as a reference source signal of the PUSCH or the PUCCH.
  • the SRS resource corresponds to the same CORESET group index as the PUSCH or PUCCH. That is, the network device cannot configure the SRS resource corresponding to one CORESET group index to serve as the reference source signal of the PUSCH or PUCCH corresponding to another CORESET group index. This ensures that the PUSCH or PUCCH transmission of each TRP or panel can be performed based on the SRS of the same TRP or panel.
  • the CORESET group index corresponding to the PUSCH or PUCCH is the CORESET group index of the CORESET where the PDCCH carrying the DCI scheduling the PUSCH or PUCCH is located, or the CORESET group index configured for the PUSCH or PUCCH for the network device through high-layer signaling.
  • the DCI for scheduling the PUCCH may be the DCI for scheduling the PDSCH corresponding to the HARQ-ACK carried on the PUCCH, or the DCI for activating the reporting of the CSI carried on the PUCCH.
  • the SRS resource set and PUSCH transmission on the same TRP or panel can be scheduled by configuring the CORESET with the same CORESET group index.
  • the step S 240 of determining of the power control parameters of the first SRS resource or the first SRS resource set according to the CORESET group index may be implemented in one of the following ways.
  • the user equipment determines the closed-loop power control adjustment state index of the first SRS resource set according to the CORESET group index corresponding to the first SRS resource set; further, the terminal may determine a closed-loop power control adjustment state for closed-loop power control of the first SRS resource set according to the closed-loop power control adjustment state index, thereby determining the transmit power of the first SRS resource set.
  • the user equipment determines the closed-loop power control adjustment state of the first SRS resource according to the transmit power control (TPC) command indicated by the downlink control information (DCI) carried by the PDCCH in the target CORESET; the CORESET group index of the target CORESET is the same as the CORESET group index corresponding to the first SRS resource.
  • TPC transmit power control
  • DCI downlink control information
  • the user terminal determines the closed-loop power control adjustment state of the first SRS resource set according to the TPC command indicated by the DCI carried by the PDCCH in the target CORESET, the CORESET group index of the target CORESET is the same as the CORESET group index corresponding to the first SRS resource set.
  • This method can ensure that the TPC commands of each TRP or panel are only used for the SRS of the TRP or panel, thereby supporting the independent closed-loop power control of each TRP or panel.
  • the user equipment detects DCI in the first CORESET, the CORESET group index of the first CORESET is the first CORESET group index, the DCI carries TPC commands exclusive for SRS, and then the terminal uses the detected TPC command in the DCI to adjust the closed-loop power control adjustment state of the first SRS resource or the first SRS resource set corresponding to the first CORESET group index, thereby determining the transmit power of the first SRS resource or the first SRS resource set.
  • the CORESET group index corresponding to the PUSCH or the PUCCH is the CORESET group index of the CORESET where the PDCCH that carries the downlink control information (DCI) scheduling the PUSCH or the PUCCH is located; optionally, the CORESET group index corresponding to the PUSCH or the PUCCH is the CORESET group index configured by the network device for the PUSCH or the PUCCH through high-layer signaling.
  • DCI downlink control information
  • the transmission parameters include at least one of the precoding matrix, the number of antenna ports, a transmission beam, a power control parameter, and a transmission antenna panel.
  • the first SRS resources or the first SRS resource sets corresponding to different CORESET group indexes support transmission on the same orthogonal frequency division multiplexing (OFDM) symbol.
  • OFDM orthogonal frequency division multiplexing
  • the SRS transmitted on the SRS resources and the SRS resource sets corresponding to different CORESET group indexes can be simultaneously transmitted on different antenna panels.
  • the embodiment can be used for SRS only for a certain purpose, or for SRS for all purposes.
  • the SRS resource or SRS resource set is used for beam management, the SRS resource or SRS resource set corresponding to the same CORESET group index cannot be transmitted simultaneously on the same OFDM, but can only be transmitted on different OFDM symbols.
  • Embodiment 1 of the application provides an uplink transmission control method, and the user equipment determines the CORESET group index corresponding to the SRS resource or the SRS resource set.
  • the transmission parameters of the PUSCH or PUCCH corresponding to the same CORESET group index are determined according to the SRS resource or the SRS resource set, or the power control parameters of the SRS or SRS resource set is determined according to the CORESET group index.
  • the network device can configure different CORESET group indexes for the uplink signals of different TRPs or different panels, so that the SRS of one TRP or panel can be used to determine the transmission parameters of the PUSCH/PUCCH of the TRP or panel, and the PUSCH/PUCCH of each TRP or panel can be independently scheduled.
  • the user equipment may also determine the power control parameters of the SRS according to the CORESET group index, and thus independent power control is performed on the SRS of each TRP or each panel. Therefore, the flexibility of uplink transmission control is improved.
  • an uplink transmission control apparatus 300 provided in Embodiment 2 of the application is applied to user equipment, and the uplink transmission control apparatus 300 includes the following.
  • An index determining module 310 determines the control resource set (CORESET) group index corresponding to the first sounding reference signal (SRS) resource or the first sounding reference signal (SRS) resource set.
  • CORESET control resource set
  • a parameter determining module 320 determines the transmission parameters of the physical uplink shared channel (PUSCH) or the physical uplink control channel (PUCCH) of the same CORESET group index corresponding to the first SRS resource or the first SRS resource set according to the first SRS resource or the first SRS resource set, or determines the power control parameters of the first SRS resource or the first SRS resource set according to the CORESET group index.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the index determining module 310 is configured to process any one of the following.
  • the CORESET group index is determined by a configuration parameter of the first SRS resource or the first SRS resource set.
  • the configuration parameter includes an indicating parameter for indicating the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the medium access layer control element (MAC CE) for activating semi-persistent SRS transmission determines the CORESET group index, and the MAC CE includes a parameter for indicating the CORESET group index.
  • the sounding reference signal (SRS) transmitted on the first SRS resource or the first SRS resource set is an aperiodic SRS
  • the CORESET group index of the CORESET where the DCI for activating the aperiodic SRS transmission is located is used as the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to spatial relation information or a transmission configuration indicator (TCI) state of a second SRS resource in the first SRS resource or the first SRS resource set.
  • TCI transmission configuration indicator
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to the closed-loop power control adjustment state used by the first SRS resource or the first SRS resource set.
  • the corresponding CORESET group index is determined according to the SRS resource ID of the first SRS resource or the SRS resource set ID of the first SRS resource set.
  • the second SRS resource is the SRS resource earliest transmitted in the first SRS resource set; the second SRS resource is the SRS resource with the lowest SRS resource identification (ID) in the first SRS resource set; or the second SRS resource is any SRS resource in the first SRS resource set.
  • ID SRS resource identification
  • the configuration parameter of the spatial relation information or the TCI state includes the CORESET group index.
  • a correspondence relationship exists between the spatial relation information and the CORESET group index or between the TCI state and the CORESET group index.
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to the closed-loop power control adjustment state used by the first SRS resource or the first SRS resource set, then the following is performed.
  • the index determining module 310 is specifically configured to schedule the CORESET group index of the CORESET where the DCI scheduling the PUSCH is located to be used as the CORESET group index corresponding to the first SRS resource or the first SRS resource set if the closed-loop power control adjustment state of the SRS transmitted on the first SRS resource or the first SRS resource set is the same as the closed-loop power control adjustment state of the PUSCH.
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to the closed-loop power control adjustment state used by the first SRS resource or the first SRS resource set, then the following is performed.
  • the index determining module is specifically configured to use different CORESET group indexes corresponding to the first SRS resources or the first SRS resource sets of different closed-loop power control adjustment state indexes if the closed-loop power control adjustment state of the SRS transmitted on the first SRS resource or the first SRS resource set is different from the closed-loop power control adjustment state of the physical uplink shared channel (PUSCH).
  • PUSCH physical uplink shared channel
  • the index determining module is further specifically configured to set the value of the CORESET group index to be a preset value, such as 0 if the user equipment cannot derive the CORESET group index corresponding to the first SRS resource or the first SRS resource set from the configuration information of the network device.
  • multiple first SRS resource sets for obtaining downlink CSI, or multiple first SRS resource sets for antenna switching correspond to the same CORESET group index.
  • the parameter determining module 320 is specifically configured to determine the transmission parameters of the PUSCH according to the first SRS resource or the third SRS resource; the third SRS resource is an SRS resource determined from the first SRS resource set according to the sounding reference signal resource indication SRI information or the transmission configuration indication (TCI) information in the DCI scheduling the PUSCH.
  • the third SRS resource is an SRS resource determined from the first SRS resource set according to the sounding reference signal resource indication SRI information or the transmission configuration indication (TCI) information in the DCI scheduling the PUSCH.
  • the parameter determining module 320 is specifically configured to process at least one of the following.
  • the precoding matrix for transmitting the PUSCH is determined based on the number of antenna ports of the first SRS resource or the third SRS resource and the precoding matrix indication PMI information notified by the network device.
  • the precoding matrix for transmitting the SRS on the first SRS resource or the third SRS resource is used as the precoding matrix for transmitting the PUSCH.
  • the transmission beam for transmitting the SRS on the first SRS resource or the third SRS resource is used as the transmission beam for transmitting the PUSCH.
  • the total number of antenna ports of the first SRS resource or the third SRS resource, or the number of SRS resources included in the first SRS resource or the third SRS resource is used as the number of antenna ports for transmitting the PUSCH.
  • the antenna ports for transmitting the first SRS resource or the third SRS resource are used as the antenna ports for transmitting the PUSCH.
  • the antenna panel for sending the SRS on the first SRS resource or the third SRS resource is used as the antenna panel for transmitting the PUSCH.
  • the parameter determining module 320 is specifically configured to use the SRS resource in the first SRS resource or the first SRS resource set as a reference source signal in the spatial relation information of the PUSCH or the reference source signal in the TCI state of the PUSCH, and the transmission beam of the PUSCH is determined according to the reference source signal.
  • the SRS resource in the first SRS resource set may be any SRS resource in the first SRS resource set.
  • the network device may configure the SRS resource in the first SRS resource set to the user equipment to serve as a reference source signal of the PUSCH or the PUCCH.
  • the parameter determining module 320 is specifically configured to use the SRS resource in the first SRS resource or the first SRS resource set as a reference source signal in the spatial relation information of the PUCCH or the reference source signal in the TCI state of the PUCCH, and the transmission beam of the PUCCH is determined according to the reference source signal.
  • the SRS resource in the first SRS resource set may be any SRS resource in the first SRS resource set.
  • the network device may configure the SRS resource in the first SRS resource set to the user equipment to serve as a reference source signal of the PUSCH or the PUCCH.
  • the fourth SRS resource is configured to the user equipment as a reference source signal of the PUSCH or the PUCCH.
  • the power control parameters of the first SRS resource or the first SRS resource set are determined according to the CORESET group index, then the following is performed.
  • the parameter determining module 320 is specifically configured to determine the closed-loop power control adjustment state index of the first SRS resource or the first SRS resource set according to the CORESET group index.
  • the closed-loop power control adjustment state of the first SRS resource or the first SRS resource set is determined according to the transmit power control TPC command indicated by the downlink control information DCI in the target CORESET; the CORESET group index of the target CORESET is the same as the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the CORESET group index corresponding to the PUSCH or the PUCCH is the CORESET group index of the CORESET where the PDCCH that carries the downlink control information DCI scheduling the PUSCH or the PUCCH is located; or the CORESET group index corresponding to the PUSCH or the PUCCH is the CORESET group index configured by the network device for the PUSCH or the PUCCH through high-layer signaling.
  • the transmission parameters include at least one of the precoding matrix, the number of antenna ports, a transmission beam, a power control parameter, and a transmission antenna panel.
  • the first SRS resources or the first SRS resource sets corresponding to different CORESET group indexes support transmission on the same OFDM symbol.
  • an uplink transmission control apparatus 400 provided by Embodiment 3 of the application is applied to network device, and the uplink transmission control apparatus 400 includes the following.
  • a determining module 410 is configured to determine a control resource set (CORESET) group index corresponding to the first sounding reference signal (SRS) resource or the first sounding reference signal SRS resource set.
  • CORESET control resource set
  • An indicating module 420 is configured to indicate the control resource set (CORESET) group index corresponding to the first SRS resource or the first SRS resource set to the user equipment.
  • CORESET control resource set
  • the determining module 410 is specifically configured to determine the CORESET group index corresponding to the first SRS resource or the first SRS resource set according to the transmission reception point (TRP) for receiving the first SRS resource or the first SRS resource set; or the CORESET group index corresponding to the first SRS resource or the first SRS resource set is determined according to the TRP for activating the first SRS resource or the first SRS resource set.
  • TRP transmission reception point
  • the indicating module 420 is specifically configured to process any one of the following.
  • the CORESET group index is indicated by a configuration parameter of the first SRS resource or the first SRS resource set, where the configuration parameter includes an indicating parameter for indicating the CORESET group index corresponding to the first SRS resource or the first SRS resource set.
  • the medium access layer control element (MAC CE) for activating semi-persistent SRS transmission indicates the CORESET group index
  • the MAC CE includes a parameter for indicating the CORESET group index
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is indicated according to spatial relation information or a transmission configuration indicator (TCI) state of a second SRS resource in the first SRS resource or the first SRS resource set.
  • TCI transmission configuration indicator
  • the CORESET group index corresponding to the first SRS resource or the first SRS resource set is indicated via the closed-loop power control adjustment state used by the first SRS resource or the first SRS resource set.
  • the corresponding CORESET group index is indicated via the SRS resource ID of the first SRS resource or the SRS resource set ID of the first SRS resource set.
  • the second SRS resource is the SRS resource earliest transmitted in the first SRS resource set; the second SRS resource is the SRS resource with the lowest SRS resource identification (ID) in the first SRS resource set; or the second SRS resource is any SRS resource in the first SRS resource set.
  • ID SRS resource identification
  • the configuration parameter of the spatial relation information or the TCI state includes the CORESET group index.
  • a correspondence relationship exists between the spatial relation information and the CORESET group index or between the TCI state and the CORESET group index.
  • the determining module 410 is specifically configured to determine the same CORESET group index for multiple first SRS resource sets for obtaining downlink CSI or multiple first SRS resource sets for antenna switching.
  • a scheduling module 430 is configured to schedule the first SRS resources or the first SRS resource sets corresponding to different CORESET group indexes to be transmitted on the same orthogonal frequency division multiplexing (OFDM) symbol.
  • OFDM orthogonal frequency division multiplexing
  • the transmission parameters include at least one of the precoding matrix, the number of antenna ports, a transmission beam, a power control parameter, and a transmission antenna panel.
  • FIG. 7 is a schematic view illustrating the structure of an uplink transmission control apparatus 500 according to Embodiment 4 of the application.
  • the uplink transmission control apparatus 500 includes a processor 510 , a memory 520 , and a network interface 530 .
  • the processor 510 calls the program in the memory 520 to execute the corresponding process in the uplink transmission control method provided in the first embodiment implemented by the network device, or execute the corresponding process in the uplink transmission control method provided in the first embodiment implemented by the user equipment, and send the execution result through the network interface 530 .
  • the processor 510 may be an independent component or a collective term for multiple processing components. For example, it may be a CPU, an ASIC, or one or more integrated circuits configured to implement the method, such as at least one microprocessor DSP, or at least one programmable gate FPGA, and the like.
  • These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor, chip or other programmable data processing apparatus to produce a machine, so that with the instructions executed by a processor of a computer or other programmable data processing apparatuses, an apparatus with specified functions for implementing a procedure or procedures of the flowcharts and/or a block or blocks of the block diagrams is produced.
  • the program may be stored in a computer-readable storage medium, and the storage medium may include a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.

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CN117730504A (zh) * 2022-07-19 2024-03-19 北京小米移动软件有限公司 一种多面板增强传输配置方法及其装置

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